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Atto 611X maleimide

产品编号:3410837
规格:suitable for fluorescence
包装规格:1MG
产品类别:
品牌:Sigma
产品价格
产品编号包装单位价格(元)国内现货国外库存购物车
34108371MG5830
基本信息
经验分子式(希尔表示法)
C32H41BF4N4O3
分子量
616.50
General description【一般说明】
Atto 611X belongs to a new generation of fluorescent labels invented by ATTO-TEC. The dye is designed for application in the area of life science, e.g. labeling of DNA, RNA or proteins. Characteristic features of the label are strong absorption, high fluorescence quantum yield, exceptionally large Stokes-shift, high photostability, good water solubility, and very little triplet formation. Atto 611X is a pH sensitive product. Above pH 5.0 it exists in an equilibrium
with a colorless form. However, this reversible reaction does not interfere with the process of coupling to protein etc.
Maleimides are well suited for coupling to thiol groups. This is similar to iodacetamides, but maleimides do react more thiol selective. They do not show significant reaction with histidine or methionine. Hydrolysis of maleimides to a mixture of isomeric nonreactive maleamic acids can compete significantly with thiol modification, particularly above pH 8. Maleimides may be used for labelling of amines, which usually requires a higher pH than reaction of maleimides with thiols.
After coupling to a substrate the label carries a net electrical charge of -1.
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包装
Bottomless glass bottle. Contents are inside inserted fused cone.
产品性质
Assay【含量】
≥80% (coupling to thiols)
fluorescence【荧光】
λex 611; λem 681 nm in 0.1 M acetate buffer pH 4.7
suitability【适用性】
suitable for fluorescence
storage temp.【存储温度】
-20℃
安全信息
RIDADR【欧洲内陆运输危险品】
NONH for all modes of transport
WGK德国【德国水污染分类】
3
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